In the medieval romance "Perceval, or the Story of the Grail," the titular character Perceval is advised by his mentor Gornemant not to ask any questions during a procession of the Holy Grail. Despite witnessing strange and wondrous things during the procession, Perceval remains silent and fails to ask any questions.
The narrator of the story comments on Perceval's failure to speak up, describing him as "a fool" for not taking the opportunity to ask about what he had seen. The narrator suggests that Perceval's silence is a sign of his lack of knowledge and understanding, and that he missed an important opportunity to learn more about the Grail and its significance.
The narrator's observations foreshadow the consequences of Perceval's silence, as it leads to his failure to achieve the Grail quest. Perceval's failure to ask questions and seek knowledge is seen as a major flaw in his character, and it is suggested that his lack of understanding will prevent him from achieving his ultimate goal.
Overall, the narrator's commentary on Perceval's silence reflects the importance of seeking knowledge and understanding in the medieval world, and the consequences of failing to do so. It also suggests that Perceval's journey will be one of learning and self-discovery, as he seeks to overcome his flaws and achieve his destiny.